Under Armour
MEDIUM RISKData breach — November 2025
In November 2025, the Everest ransomware group claimed Under Armour as a victim and attempted to extort a ransom, alleging they had obtained access to 343GB of data. In January 2026, customer data from the incident was published publicly on a popular hacking forum, including 72M email addresses. Many records also contained additional personal information such as names, dates of birth, genders, geographic locations and purchase information.
search Check if you were affected — freeData exposed in this breach
What happened in the Under Armour data breach?
In November 2025, the Everest ransomware group claimed Under Armour as a victim and attempted to extort a ransom, alleging they had obtained access to 343GB of data. In January 2026, customer data from the incident was published publicly on a popular hacking forum, including 72M email addresses. Many records also contained additional personal information such as names, dates of birth, genders, geographic locations and purchase information.
The exposed data included 6 types of personal information. Learn more about what a data breach means for you.
Quick answer — was Under Armour hacked?
Yes. Under Armour was breached in November 2025. The breach exposed 72,742,892 records including dates of birth, email addresses, genders. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the Under Armour breach so dangerous?
The Under Armour breach exposed 72,742,892 records — that is 72.7M people whose personal data is now circulating on the dark web. The combination of dates of birth, email addresses, genders makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the Under Armour breach?
Dates of birth — used to verify identity for account takeover and fraud
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Genders — may be combined with other breach data to build a profile for targeted attacks
Geographic locations — may be combined with other breach data to build a profile for targeted attacks
Names — used to build profiles and target you with personalised scams
Purchases — may be combined with other breach data to build a profile for targeted attacks
Is the Under Armour breach still dangerous in 2026?
Yes. Stolen data from the Under Armour breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2025 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your Under Armour password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the Under Armour breach
Approximately 72,742,892 user records were exposed in the Under Armour breach in November 2025.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Under Armour password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Under Armour dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Under Armour password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
Who was affected by the Under Armour breach?
The Under Armour data breach affected approximately 72,742,892 users who had accounts with the service. With 72.7M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Under Armour or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the Under Armour breach
Change your Under Armour password immediately
Go to Under Armour and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Under Armour and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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